CN201788172U - Backfilling density testing system for heat exchanger of ground source heat pump - Google Patents
Backfilling density testing system for heat exchanger of ground source heat pump Download PDFInfo
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- CN201788172U CN201788172U CN201020152891XU CN201020152891U CN201788172U CN 201788172 U CN201788172 U CN 201788172U CN 201020152891X U CN201020152891X U CN 201020152891XU CN 201020152891 U CN201020152891 U CN 201020152891U CN 201788172 U CN201788172 U CN 201788172U
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Abstract
The utility model relates to a backfilling density testing system for a heat exchanger of a ground source heat pump, which comprises a synchronizing signal generating device, a signal extracting device, a matching circuit and a recording instrument which are arranged on the ground, and an underground detection signal generator and an underground detection signal receiver which are arranged under the ground. The system provided by the utility model embodiment realizes the backfilling density testing for the heat exchanger of the ground source heat pump; and compared with the conventional pipeline suppression method, the system has fewer labors and is slightly influenced by human factors, so that the density is more accurate, and the backfilling quality can be ensured.
Description
Technical field
The utility model embodiment relates to the soil source heat pump technical field, relates in particular to a kind of backfill packing test macro of soil source heat pump heat interchanger.
Background technology
Soil source heat pump also claims earth source heat pump, is a kind ofly to realize equipment to ground architecture refrigerating or heating by carrying out heat interchange with soil.The critical piece that carries out heat interchange with soil in the soil source heat pump is vertical U type pipe parallel operation.In the work progress of soil source heat pump is installed, at first in soil, hole, then vertical U type pipe parallel operation is placed in the boring, the mode of pouring into to employing steam piano between the wall of a borehole and the vertical U type pipe parallel operation is injected backfilling material at last.Wherein, backfilling material is used for the heat exchange effect of reinforced pipe parallel operation and surrounding soil, and prevents that the day water from passing through boring to underground infiltration.Therefore, need in work progress, need the packing of backfilling material is measured, can satisfy the demand to guarantee packing.
In realizing process of the present utility model, the inventor finds that there are the following problems at least in the prior art: existing density measurement mode is mainly suppressed by pipeline, observes the variation of line pressure simultaneously and judges packing.It is bigger that but this method is influenced by human factor, and the packing that draws is also not accurate enough, can't guarantee the backfill quality.
The utility model content
The utility model embodiment provides a kind of backfill packing test macro of soil source heat pump heat interchanger, in order to test the backfill packing more accurately.
The utility model one embodiment provides a kind of backfill packing test macro of soil source heat pump heat interchanger, comprising: be arranged at synchronization signal generating apparatus, signal extracting device, match circuit and registering instrument on the ground; And be arranged at underground underground detection signal generator and underground detection signal receiver, wherein:
Described synchronization signal generating apparatus is connected with described underground detection signal generator with described signal extracting device, be used for periodically sending underground synchronizing signal, and periodically send the gate square-wave signal to described signal extracting device to described underground detection signal generator;
Underground detection signal generator is used for sending detection signal under the triggering of described underground synchronizing signal;
Described underground detection signal receiver is connected with described match circuit by cable, is used to receive the described detection signal behind tested zone, and this detection signal is converted to corresponding electric wave signal gives described match circuit through cable transmission;
Described match circuit is connected with described signal extracting device coupling, is used for described electric wave signal is mated to described signal extracting device;
Described signal extracting device is used for extracting the peak-to-peak signal of informing against from described electric wave signal under the control of described gate square-wave signal;
Described registering instrument is connected with described signal extracting device, is used to write down described first peak-to-peak signal.
In the system that another embodiment of the utility model provides, described synchronization signal generating apparatus can comprise synchronous generator, delay circuit and the gate control signal generator that connects in turn, wherein:
Described synchronous generator is used for periodically producing described underground synchronizing signal and ground synchronizing signal;
Described delay circuit is used for described ground synchronizing signal is postponed;
Gate control signal generator is used for generating the gate square-wave signal based on the described ground synchronizing signal after postponing, and described gate square-wave signal has the width that can entangle the first peak-to-peak signal in the described electric wave signal.
In the system that the another embodiment of the utility model provides, described signal extracting device can comprise ground amplifier and the sample circuit that connects in turn, wherein:
Described ground amplifier is connected with described match circuit coupling, is used for the electric wave signal that comes from match circuit is carried out undistorted amplification;
Described sample circuit is connected with described gate control signal generator, is used for extracting described first peak-to-peak signal by described gate square-wave signal from described electric wave signal.
In the utility model system that an embodiment provides again, described signal extracting device also comprises: widening circuit and writing circuit, wherein:
Described widening circuit is connected with described sample circuit, is used for described first peak-to-peak signal broadening is transformed to triangular wave, and the area of described triangular wave and the amplitude of described first peak-to-peak signal keep linear proportional relation;
Described writing circuit is used for that described triangular wave is carried out electric current and amplifies and integral smooth, and output sends to described registering instrument with the dc signal of the linear proportional relation of amplitude of described first peak-to-peak signal.
In the system that another embodiment of the utility model provides, described system can also comprise: switch and calibration signal generator, wherein:
Described switch is used for described signal extracting device is connected described match circuit and described calibration signal generator respectively;
The calibration synchronizing signal that described calibration signal generator is used for producing according to described synchronous generator produces the calibration electric wave signal and sends to described signal extracting device.
In the system that another embodiment of the utility model provides, described detection signal can be sound wave or radioactive ray.
In the system that another embodiment of the utility model provides, described system can also comprise: underground amplifier, be connected with described underground detection signal receiver, and be used for the described electric wave signal that described underground detection signal receiver generates is carried out undistorted amplification.
The described system of the utility model embodiment has realized the test of the backfill packing of soil source heat pump heat interchanger, suppresses mode with existing pipeline and compares, and artificial the participation lacked, be subjected to artificial factor little, therefore, the packing that draws is also just more accurate, thereby helps guaranteeing the backfill quality.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the backfill packing test macro embodiment one of soil source heat pump heat interchanger described in the utility model;
Fig. 2 is the structural representation of the backfill packing test macro embodiment two of soil source heat pump heat interchanger described in the utility model;
Fig. 3 is the structural representation of the backfill packing test macro embodiment three of soil source heat pump heat interchanger described in the utility model.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the structural representation of the backfill packing test macro embodiment one of soil source heat pump heat interchanger described in the utility model; As shown in the figure, this system comprises: be arranged at synchronization signal generating apparatus 10, signal extracting device 20, match circuit 30 and registering instrument 40 on the ground; And be arranged at underground underground detection signal generator 50 and underground detection signal receiver 60, its principle of work is described as follows:
Described synchronization signal generating apparatus 10 is connected with described underground detection signal generator 50 with described signal extracting device 20, when testing, periodically send underground synchronizing signal, and periodically send the gate square-wave signal to described signal extracting device 20 to described underground detection signal generator 50;
Underground detection signal generator 50 sends detection signal under the triggering of described underground synchronizing signal, particularly, this detection signal can be acoustic signals or radioactive ray signal; Underground detection signal receiver 60 is connected with described match circuit 30 by cable, when the described detection signal that receives behind tested zone, this detection signal is converted to corresponding electric wave signal gives described match circuit 30 through cable transmission;
Described match circuit 30 is connected with described signal extracting device coupling, will mate from the described electric wave signal that cable receives to described signal extracting device 20; Described signal extracting device 20 extracts the peak-to-peak signal of informing against from described electric wave signal under the control of the described gate square-wave signal that comes from described synchronization signal generating apparatus 10, send to registering instrument 40; Described registering instrument 40 is connected with described signal extracting device 20, writes down described first peak-to-peak signal.
Wherein, underground detection signal generator 50 and described underground detection signal receiver 60 can be made by piezoceramics crystal or magnetostriction materials; Described first peak-to-peak signal is meant the signal of range value maximum in the described electric wave signal.The described system of present embodiment realizes that the packing testing principle is described as follows:
After underground detection signal generator 50 sent detection signal, this detection signal was propagated underground, detection signal receiver 60 under the arrival point of back, tested zone.Wherein, described tested zone is meant and places the zone of carrying out backfill behind the vertical U type pipe parallel operation in earth drilling.Include the detection signal that forms through behind the propagation mediums such as vertical U type pipe parallel operation, air, stratum and mud in the detection signal that underground detection signal receiver 60 receives.
Particularly, the detection signal that above-mentioned underground detection signal generator 50 sends can be sound wave or radioactive ray, and wherein, sound wave can be produced by sonic generator, and radioactive ray can be produced by radionuclide source.The selection of nucleic can be considered the factors such as size, monochromaticity, the length of half life period, chemical physical stability and price of energy, for example can select
60Co,
137Cs,
241Am,
238Pu and
210Po etc.Because radionuclide source can accomplish that diameter is millimetre-sized point source, therefore, helps reducing the volume of underground detection signal generator 50, with the situation that is applicable to that earth drilling is very little.
Because the propagation impedance of different propagation mediums has than big-difference, therefore the decay program to sound wave or radioactive ray also has nothing in common with each other.According to the ultimate principle that sound wave or radioactive ray are propagated, damping capacity minimum in solid, velocity of propagation is the fastest, and in gas the damping capacity maximum, velocity of propagation is the slowest.Correspondingly, the packing in tested zone is high more, and air content is just few more, and the first peak-to-peak amplitude of measured detection signal is just high more; On the contrary, packing is low more, and first peak-to-peak amplitude is just low more.Therefore, carry out record, promptly can draw the packing in tested zone by 40 pairs of first peak-to-peak signals of registering instrument.
The described system of present embodiment has realized the test of the backfill packing of soil source heat pump heat interchanger, suppresses mode with existing pipeline and compares, and artificial the participation lacked, be subjected to artificial factor little, therefore, the packing that draws is also just more accurate, thereby helps guaranteeing the backfill quality.
Fig. 2 is the structural representation of the backfill packing test macro embodiment two of soil source heat pump heat interchanger described in the utility model; As shown in the figure, present embodiment describes the specific implementation of each device in this system on the basis of embodiment one:
Described synchronization signal generating apparatus 10 can comprise synchronous generator 11, delay circuit 12 and the gate control signal generator 13 that connects in turn, and its principle of work is as follows:
When carrying out the packing test, described synchronous generator 11 periodically produces described underground synchronizing signal and ground synchronizing signal; Specifically can produce the positive and negative narrow pulse signal of wide 30 μ s with the frequency period ground of per second 20 times, positive narrow pulse signal wherein is sent to underground detection signal generator 50 as underground synchronizing signal, will bears narrow pulse signal and be sent to delay circuit 12 as the ground synchronizing signal;
12 pairs of described grounds of described delay circuit synchronizing signal postpones; Described gate control signal generator 13 generates the gate square-wave signal based on the described ground synchronizing signal after postponing, and the width of the gate square-wave signal that the time delay of described delay circuit 12 and described gate control signal generator 13 produce need make described gate square-wave signal can entangle the width of the first peak-to-peak signal in the described electric wave signal.For example, this delay circuit 12 can carry out delay monostable multivibrator 200～700 μ s to described ground synchronizing signal, to adapt to detection signal in underground travel-time and the electric wave signal time delay by cable; The gate square-wave signal width that terminal generates can be 30～60 μ s.This gate square-wave signal can be square ripple or losing side ripple.
Described signal extracting device 20 comprises ground amplifier 21 and the sample circuit 22 that connects in turn, and its principle of work is as follows:
Described ground amplifier 21 is connected with described match circuit 30 couplings, and the electric wave signal that comes from match circuit 30 is carried out undistorted amplification; Described sample circuit 22 is connected with described gate control signal generator 13, extracts described first peak-to-peak signal by described gate square-wave signal from described electric wave signal.
Be sent to registering instrument 40 after the described first peak-to-peak signal that extracts can adopt prior art to handle and carry out record, perhaps also can adopt the described following mode of present embodiment to handle:
Described widening circuit 23 is connected with described sample circuit 22, and described first peak-to-peak signal broadening is transformed to triangular wave, and the area of described triangular wave and the amplitude of described first peak-to-peak signal keep linear proportional relation; Described writing circuit is used for that described triangular wave is carried out electric current and amplifies and integral smooth, and output sends to described registering instrument 40 with the dc signal of the linear proportional relation of amplitude of described first peak-to-peak signal.
Make described first peak-to-peak signal after above-mentioned widening circuit 23 and writing circuit 24 processing, carry out record by registering instrument 40 again, help making the first peak-to-peak signal that records more clear, so that observe relatively.
In addition, can further include underground amplifier 70 in the described system of present embodiment, be connected with described underground detection signal receiver 60, be used for the described electric wave signal that described underground detection signal receiver 60 generates is carried out undistorted amplification, after this send to described match circuit 30 through cable again.
Help guaranteeing the validity measured by described electric wave signal being carried out undistorted amplification.In order to realize undistorted amplification, this underground amplifier 70 must strictness be operated in linear zone, especially should be specifically noted that this is a kind of when the electric wave signal that receives is strong.In real work, can in indoor verification tube (as: steel cylinder), do strict the adjustment to the gain of described underground amplifier 70, can realize undistorted amplification to guarantee it to electric wave signal.
Fig. 3 is the structural representation of the backfill packing test macro embodiment three of soil source heat pump heat interchanger described in the utility model, as shown in the figure, on the basis of the foregoing description, described can further include: switch 80 and calibration signal generator 90, its principle of work is as follows:
Described switch 80 is used for described signal extracting device 20 is connected described match circuit 30 and described calibration signal generator 90 respectively.When carrying out the packing test operation, switch 80 connects described match circuit 30 with described signal extracting device 20; When carrying out calibration operation, switch 80 connects described calibration signal generator 90 with described signal extracting device 20.
When carrying out calibration operation, the calibration synchronizing signal that described calibration signal generator 90 produces according to described synchronous generator 11 produces the calibration electric wave signal and sends to described signal extracting device 20.This calibration electric wave signal replaces described electric wave signal to carry out first peak-to-peak signal extraction, carries out record by registering instrument 40 again, to realize system calibration.
The described system of present embodiment also has calibration function, therefore, helps further guaranteeing the packing precision of test result.
It should be noted that at last: above embodiment only in order to the explanation the technical solution of the utility model, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (7)
1. the backfill packing test macro of a soil source heat pump heat interchanger is characterized in that, comprising: be arranged at synchronization signal generating apparatus, signal extracting device, match circuit and registering instrument on the ground; And be arranged at underground underground detection signal generator and underground detection signal receiver, wherein:
Described synchronization signal generating apparatus is connected with described underground detection signal generator with described signal extracting device, be used for periodically sending underground synchronizing signal, and periodically send the gate square-wave signal to described signal extracting device to described underground detection signal generator;
Underground detection signal generator is used for sending detection signal under the triggering of described underground synchronizing signal;
Described underground detection signal receiver is connected with described match circuit by cable, is used to receive the described detection signal behind tested zone, and this detection signal is converted to corresponding electric wave signal gives described match circuit through cable transmission;
Described match circuit is connected with described signal extracting device coupling, is used for described electric wave signal is mated to described signal extracting device;
Described signal extracting device is used for extracting the peak-to-peak signal of informing against from described electric wave signal under the control of described gate square-wave signal;
Described registering instrument is connected with described signal extracting device, is used to write down described first peak-to-peak signal.
2. the backfill packing test macro of soil source heat pump heat interchanger according to claim 1 is characterized in that, described synchronization signal generating apparatus comprises synchronous generator, delay circuit and the gate control signal generator that connects in turn, wherein:
Described synchronous generator is used for periodically producing described underground synchronizing signal and ground synchronizing signal;
Described delay circuit is used for described ground synchronizing signal is postponed;
Gate control signal generator is used for generating the gate square-wave signal based on the described ground synchronizing signal after postponing, and described gate square-wave signal has the width that can entangle the first peak-to-peak signal in the described electric wave signal.
3. the backfill packing test macro of soil source heat pump heat interchanger according to claim 2 is characterized in that, described signal extracting device comprises ground amplifier and the sample circuit that connects in turn, wherein:
Described ground amplifier is connected with described match circuit coupling, is used for the electric wave signal that comes from match circuit is carried out undistorted amplification;
Described sample circuit is connected with described gate control signal generator, is used for extracting described first peak-to-peak signal by described gate square-wave signal from described electric wave signal.
4. the backfill packing test macro of soil source heat pump heat interchanger according to claim 3 is characterized in that described signal extracting device also comprises: widening circuit and writing circuit, wherein:
Described widening circuit is connected with described sample circuit, is used for described first peak-to-peak signal broadening is transformed to triangular wave, and the area of described triangular wave and the amplitude of described first peak-to-peak signal keep linear proportional relation;
Described writing circuit is used for that described triangular wave is carried out electric current and amplifies and integral smooth, and output sends to described registering instrument with the dc signal of the linear proportional relation of amplitude of described first peak-to-peak signal.
5. the backfill packing test macro of soil source heat pump heat interchanger according to claim 2 is characterized in that described system also comprises: switch and calibration signal generator, wherein:
Described switch is used for described signal extracting device is connected described match circuit and described calibration signal generator respectively;
The calibration synchronizing signal that described calibration signal generator is used for producing according to described synchronous generator produces the calibration electric wave signal and sends to described signal extracting device.
6. the backfill packing test macro of soil source heat pump heat interchanger according to claim 1 is characterized in that described detection signal is sound wave or radioactive ray.
7. according to the backfill packing test macro of arbitrary described soil source heat pump heat interchanger in the claim 1～6, it is characterized in that, described system also comprises: underground amplifier, be connected with described underground detection signal receiver, be used for the described electric wave signal that described underground detection signal receiver generates is carried out undistorted amplification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020152891XU CN201788172U (en) | 2010-04-06 | 2010-04-06 | Backfilling density testing system for heat exchanger of ground source heat pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020152891XU CN201788172U (en) | 2010-04-06 | 2010-04-06 | Backfilling density testing system for heat exchanger of ground source heat pump |
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| CN201788172U true CN201788172U (en) | 2011-04-06 |
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| CN201020152891XU Expired - Fee Related CN201788172U (en) | 2010-04-06 | 2010-04-06 | Backfilling density testing system for heat exchanger of ground source heat pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109725006A (en) * | 2019-01-16 | 2019-05-07 | 湖南大学 | A kind of real-time testing system for remolding formation compaction degree and filler lumpiness |
-
2010
- 2010-04-06 CN CN201020152891XU patent/CN201788172U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109725006A (en) * | 2019-01-16 | 2019-05-07 | 湖南大学 | A kind of real-time testing system for remolding formation compaction degree and filler lumpiness |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20160406 |